Field emission device and method of forming the same

A field emission device comprising:

• a gate electrode including a first gate line extending a first direction of a first substrate, a plurality of second gate lines branching from the first gate line and extending a second direction that is not in parallel with the first direction, and third gate lines branching from the second gate lines;
• a cathode electrode including a first cathode line being in parallel with the first gate line on the first substrate, a plurality of second cathode lines branching from the first cathode line and being in parallel with the second gate lines, and third cathode lines branching from the second cathode lines and being interlocked with the third gate lines;
• a second substrate disposed in parallel with the first substrate and spaced apart from the first substrate at a predetermined distance;
• an anode electrode opposite to the gate electrode and the cathode electrode and a phosphor layer on the anode electrode, on the second substrate;
• and
• a spacer making the first and second substrates spaced apart from each other,
• wherein the gate electrode and the cathode electrode constitute a driving unit.